/*justify的方式*/
.main{
    text-align: justify;
}
.main:after{
    content: "";
    display:inline-block;
    width: 100%;
}
.main div{
    width: 50px;
    height: 50px;
    background: #00FFFF;
    display: inline-block;
}
.main div:nth-child(odd){
    width: 100px;
}
/*flex的方式*/
/*.main{*/
/*    display: flex;*/
/*    justify-content:space-between;*/
/*}*/

